Arch-Linux

USB 設備未列為 tty*

  • February 12, 2020

我正在嘗試將 ST-Link v2 程序員列為 tty*。

在

OS: Arch Linux x86_64
Host: Inspiron 7580
Kernel: 5.5.2-arch1-1

插入設備會產生以下輸出

journalctl -a

kernel: usb 1-1: new full-speed USB device number 31 using xhci_hcd
kernel: usb 1-1: New USB device found, idVendor=0483, idProduct=3748, bcdDevice= 1.00
kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
kernel: usb 1-1: Product: STM32 STLink
kernel: usb 1-1: Manufacturer: STMicroelectronics
kernel: usb 1-1: SerialNumber: SÿnReIBg

為了

lsusb -v

Bus 001 Device 031: ID 0483:3748 STMicroelectronics ST-LINK/V2
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass            0 
 bDeviceSubClass         0 
 bDeviceProtocol         0 
 bMaxPacketSize0        64
 idVendor           0x0483 STMicroelectronics
 idProduct          0x3748 ST-LINK/V2
 bcdDevice            1.00
 iManufacturer           1 STMicroelectronics
 iProduct                2 STM32 STLink
 iSerial                 3 SÿnReIBg
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength       0x0027
   bNumInterfaces          1
   bConfigurationValue     1
   iConfiguration          0 
   bmAttributes         0x80
     (Bus Powered)
   MaxPower              100mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           3
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass    255 Vendor Specific Subclass
     bInterfaceProtocol    255 Vendor Specific Protocol
     iInterface              4 ST Link
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x02  EP 2 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x83  EP 3 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
 (Bus Powered)

我的 udev 規則idVendor=0483, idProduct=3748是49-stlinkv2.rules：

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="3748", \
   MODE:="0666", \
   SYMLINK+="stlinkv2_%n"

該設備之前可以在 Ubuntu 上執行。

Nucleo-64 板的嵌入式 ST-Link 列為ttyACM0無故障。工作核板的輸出：

journalctl -a

kernel: usb 1-1: new full-speed USB device number 32 using xhci_hcd
kernel: usb 1-1: New USB device found, idVendor=0483, idProduct=374b, bcdDevice= 1.00
kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
kernel: usb 1-1: Product: STM32 STLink
kernel: usb 1-1: Manufacturer: STMicroelectronics
kernel: usb 1-1: SerialNumber: 066DFF494849887767073715
kernel: usb-storage 1-1:1.1: USB Mass Storage device detected
kernel: scsi host1: usb-storage 1-1:1.1
kernel: cdc_acm 1-1:1.2: ttyACM0: USB ACM device
kernel: scsi 1:0:0:0: Direct-Access     MBED     microcontroller  1.0  PQ: 0 ANSI: 2
kernel: sd 1:0:0:0: [sda] 328 512-byte logical blocks: (168 kB/164 KiB)
kernel: sd 1:0:0:0: [sda] Write Protect is off
kernel: sd 1:0:0:0: [sda] Mode Sense: 03 00 00 00
kernel: sd 1:0:0:0: [sda] No Caching mode page found
kernel: sd 1:0:0:0: [sda] Assuming drive cache: write through
kernel: sd 1:0:0:0: [sda] Attached SCSI removable disk

lsusb -v

Bus 001 Device 032: ID 0483:374b STMicroelectronics ST-LINK/V2.1
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass          239 Miscellaneous Device
 bDeviceSubClass         2 
 bDeviceProtocol         1 Interface Association
 bMaxPacketSize0        64
 idVendor           0x0483 STMicroelectronics
 idProduct          0x374b ST-LINK/V2.1
 bcdDevice            1.00
 iManufacturer           1 STMicroelectronics
 iProduct                2 STM32 STLink
 iSerial                 3 066DFF494849887767073715
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength       0x0080
   bNumInterfaces          4
   bConfigurationValue     1
   iConfiguration          0 
   bmAttributes         0x80
     (Bus Powered)
   MaxPower              300mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           3
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass    255 Vendor Specific Subclass
     bInterfaceProtocol    255 Vendor Specific Protocol
     iInterface              4 ST-Link Debug
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x01  EP 1 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0020  1x 32 bytes
       bInterval               0
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       0
     bNumEndpoints           2
     bInterfaceClass         8 Mass Storage
     bInterfaceSubClass      6 SCSI
     bInterfaceProtocol     80 Bulk-Only
     iInterface              5 ST-Link mass storage
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x83  EP 3 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x03  EP 3 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
   Interface Association:
     bLength                 8
     bDescriptorType        11
     bFirstInterface         2
 bInterfaceCount         2
 bFunctionClass          2 Communications
 bFunctionSubClass       2 Abstract (modem)
 bFunctionProtocol       1 AT-commands (v.25ter)
 iFunction               6 ST-Link VCP Ctrl
Interface Descriptor:
 bLength                 9
 bDescriptorType         4
 bInterfaceNumber        2
 bAlternateSetting       0
 bNumEndpoints           1
 bInterfaceClass         2 Communications
 bInterfaceSubClass      2 Abstract (modem)
 bInterfaceProtocol      1 AT-commands (v.25ter)
 iInterface              6 ST-Link VCP Ctrl
 CDC Header:
   bcdCDC               1.10
 CDC Call Management:
   bmCapabilities       0x00
   bDataInterface          3
 CDC ACM:
   bmCapabilities       0x06
     sends break
     line coding and serial state
 CDC Union:
   bMasterInterface        2
   bSlaveInterface         3 
 Endpoint Descriptor:
   bLength                 7
   bDescriptorType         5
   bEndpointAddress     0x84  EP 4 IN
   bmAttributes            3
     Transfer Type            Interrupt
     Synch Type               None
     Usage Type               Data
   wMaxPacketSize     0x0002  1x 2 bytes
   bInterval             255
Interface Descriptor:
 bLength                 9
 bDescriptorType         4
 bInterfaceNumber        3
 bAlternateSetting       0
 bNumEndpoints           2
 bInterfaceClass        10 CDC Data
 bInterfaceSubClass      0 
 bInterfaceProtocol      0 
 iInterface              7 ST-Link VCP Data
 Endpoint Descriptor:
   bLength                 7
   bDescriptorType         5
   bEndpointAddress     0x05  EP 5 OUT
   bmAttributes            2
     Transfer Type            Bulk
     Synch Type               None
     Usage Type               Data
   wMaxPacketSize     0x0008  1x 8 bytes
   bInterval               0
 Endpoint Descriptor:
   bLength                 7
   bDescriptorType         5
   bEndpointAddress     0x85  EP 5 IN
   bmAttributes            2
     Transfer Type            Bulk
     Synch Type               None
     Usage Type               Data
   wMaxPacketSize     0x0010  1x 16 bytes
   bInterval               0
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
 (Bus Powered)

我的 udev 規則idVendor=0483, idProduct=374b是49-stlinkv2-1.rules：

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374a", \
   MODE:="0666", \
   SYMLINK+="stlinkv2-1_%n"

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374b", \
   MODE:="0666", \
   SYMLINK+="stlinkv2-1_%n"

我注意到工作設備報告為：

Bus 001 Device 032: ID 0483:374b STMicroelectronics ST-LINK/V2.1

而問題設備報告為：

Bus 001 Device 031: ID 0483:3748 STMicroelectronics ST-LINK/V2

請參閱本 PDF 第 2 頁上的 ST-LINK 版本概述。

Nucleo-64 板上的嵌入式 ST-LINK 是 ST-LINK/V2-1，它有一些額外的 USB 介面：一個 USB 大容量儲存介面和一個虛擬 COM 埠。ttyACMn後者在 Linux 中被列為設備。

基本的 ST-LINK/V2（沒有 -1 後綴）沒有虛擬 COM 埠，因此沒有任何東西可以映射為 TTY 設備。

上電時，基本 ST-LINK/V2 將處於韌體升級模式，需要專用命令切換到 STM8 或 STM32 調試模式（取決於載入的韌體）。另一方面，ST-LINK/V2-1 及更新版本以已經執行的韌體開始，並且需要專用命令來切換到韌體升級模式。

該stlink-tool實用程序實際上並不使用 TTY 設備，而是使用原始 USB 命令。它使用libusb-1.0，因此要使用stlink-tool，您需要確保/dev/bus/usb/*/*您的使用者帳戶可以訪問適當的原始 USB 設備節點。如果lsusb命令將設備報告為Bus 001 Device 031，則正確的設備節點將/dev/bus/usb/001/031分別為。

引用自：https://unix.stackexchange.com/questions/567148

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